Lateral Distribution of Charged Species along a Polyelectrolyte Probed with a Fluorescence Blob Model
Why this work is in the frame
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Bibliographic record
Abstract
The distribution of metal counterions binding onto the oppositely charged surface of a model polyelectrolyte, namely, DNA, was characterized by conducting fluorescence quenching experiments. In these experiments, DNA was used as a molecular ruler to measure the average distance (d(blob)) over which electron transfer takes place between DNA-intercalated ethidium bromide (DNA-EB) and the electrostatically bound divalent metal cations Ni(2+) and Cu(2+). Analysis of the fluorescence decays of DNA-EB quenched by Cu(2+) and Ni(2+) with the fluorescence blob model showed that d(blob) was equal to the Debye length (κ(-1)). This surprisingly simple result considering the overall complexity of the system under study led to the straightforward proposal that counterions bind to a polyelectrolyte by distributing themselves randomly into an array of self-defined subdomains of dimension κ(-1). In turn, this insight can be utilized to rationalize the complex behavior of polyelectrolytes in aqueous solution.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it